The answer to 'how much to fix boiler' is that the cost to repair a boiler can vary significantly depending on several factors. In general, boiler repair costs can range from a few hundred dollars for minor issues up to several thousand dollars for more complex problems.
Some of the key factors that influence boiler repair costs include the age and condition of the boiler, the specific problem that needs to be fixed, the brand and model of the boiler, the labor rates in your local area, and whether any replacement parts are needed. It's important to get quotes from local HVAC professionals to get an accurate estimate for your specific situation.